Ios 如何为UIAlertController（ActionSheet）创建一个全局函数以在多个项目类中访问

我想在

NSObject

类中为

UIAlertCotroller

创建一个函数。这样我就可以在任何类中访问这个函数。我已尝试使用以下代码：

open class func showActionSheet(_ delegate: UIViewController, message: String, strtittle: String, handler: ((UIAlertController) -> Void)! = nil)
    {
        let actionSheetController: UIAlertController = UIAlertController(title: strtittle, message: message, preferredStyle: UIAlertControllerStyle.actionSheet)

        if handler == nil{
            actionSheetController.addAction(UIAlertAction(title: "Default(Off)" , style: .default , handler:{ (UIAlertAction)in
            }))
        }
        else{
            actionSheetController.addAction(UIAlertAction(title: "Default(Off)" , style: .default , handler:{ (UIAlertAction)in

            }))
        }

        delegate.present(actionSheetController, animated: true, completion: {
            print("completion block")
        })
    }

这是我做的函数，但问题是ActionSheet中可能有很多动作，它们也有不同的标题和风格

问题：如何实现此功能？请帮忙

---

谢谢

对UIAlertController进行扩展

extension UIAlertController{

func AlertWithTextField(_ view:UIViewController) -> UIAlertController{

    let actionSheetController: UIAlertController = UIAlertController(title: "Action Sheet", message: message, preferredStyle: UIAlertControllerStyle.actionSheet)


        actionSheetController.addAction(UIAlertAction(title: "No" , style: .default , handler:{ (UIAlertAction)in

        }))
       actionSheetController.addAction(UIAlertAction(title: "Yes" , style: .default , handler:{ (UIAlertAction)in

       }))


    view.present(actionSheetController, animated: true, completion: {
        print("completion block")
    })
 return actionSheetController
}
}

  let alert = UIAlertController()
  alert.AlertWithTextField(self)

从ViewController调用此选项

extension UIAlertController{

func AlertWithTextField(_ view:UIViewController) -> UIAlertController{

    let actionSheetController: UIAlertController = UIAlertController(title: "Action Sheet", message: message, preferredStyle: UIAlertControllerStyle.actionSheet)


        actionSheetController.addAction(UIAlertAction(title: "No" , style: .default , handler:{ (UIAlertAction)in

        }))
       actionSheetController.addAction(UIAlertAction(title: "Yes" , style: .default , handler:{ (UIAlertAction)in

       }))


    view.present(actionSheetController, animated: true, completion: {
        print("completion block")
    })
 return actionSheetController
}
}

  let alert = UIAlertController()
  alert.AlertWithTextField(self)

---

对UIAlertController进行扩展

extension UIAlertController{

func AlertWithTextField(_ view:UIViewController) -> UIAlertController{

    let actionSheetController: UIAlertController = UIAlertController(title: "Action Sheet", message: message, preferredStyle: UIAlertControllerStyle.actionSheet)


        actionSheetController.addAction(UIAlertAction(title: "No" , style: .default , handler:{ (UIAlertAction)in

        }))
       actionSheetController.addAction(UIAlertAction(title: "Yes" , style: .default , handler:{ (UIAlertAction)in

       }))


    view.present(actionSheetController, animated: true, completion: {
        print("completion block")
    })
 return actionSheetController
}
}

  let alert = UIAlertController()
  alert.AlertWithTextField(self)

从ViewController调用此选项

extension UIAlertController{

func AlertWithTextField(_ view:UIViewController) -> UIAlertController{

    let actionSheetController: UIAlertController = UIAlertController(title: "Action Sheet", message: message, preferredStyle: UIAlertControllerStyle.actionSheet)


        actionSheetController.addAction(UIAlertAction(title: "No" , style: .default , handler:{ (UIAlertAction)in

        }))
       actionSheetController.addAction(UIAlertAction(title: "Yes" , style: .default , handler:{ (UIAlertAction)in

       }))


    view.present(actionSheetController, animated: true, completion: {
        print("completion block")
    })
 return actionSheetController
}
}

  let alert = UIAlertController()
  alert.AlertWithTextField(self)

---

我用这个找到了解决问题的方法

他们正在进行修改，我必须这样做，以实现我的目标。代码如下：

在控制器类中：

 Alert.showActionSheet(self, message: "Save incoming media for this chat",strtittle: "",actionTittle: ["Default(Off)","Always","Never","Cancel"],
                                        actionStyle:  [.default,.default,.default,.cancel] ,
                                        withHandler:  [defaultHandler, alwaysHandler, neverHandler, cancelHandler])

func defaultHandler(action: UIAlertAction) {
        //Add code of present
        print("DefaultHandler")
    }

    func alwaysHandler(action: UIAlertAction) {
        //Add code of present
        print("alwaysHandler")

    }

    func neverHandler(action: UIAlertAction) {
        //Add code of present
         print("neverHandler")
}

func cancelHandler(action: UIAlertAction) {
    //Add code of present
     print("cancelHandler")
}

open class func showActionSheet(_ delegate: UIViewController, message: String, strtittle: String, actionTittle: [String], actionStyle: [UIAlertActionStyle], withHandler handler: [((UIAlertAction) -> Void)]?)
    {
        var actionSheetController: UIAlertController = UIAlertController()

        if message != "" || strtittle != ""
        {
            actionSheetController = UIAlertController(title: strtittle, message: message, preferredStyle: UIAlertControllerStyle.actionSheet)
        }

        for i in 0..<actionTittle.count
        {
            actionSheetController.addAction(UIAlertAction(title: actionTittle[i],
                                                          style: actionStyle[i],
                                                          handler: handler?[i]))
        }

        delegate.present(actionSheetController, animated: true, completion: nil)

    }

在NSObject类中：

 Alert.showActionSheet(self, message: "Save incoming media for this chat",strtittle: "",actionTittle: ["Default(Off)","Always","Never","Cancel"],
                                        actionStyle:  [.default,.default,.default,.cancel] ,
                                        withHandler:  [defaultHandler, alwaysHandler, neverHandler, cancelHandler])

func defaultHandler(action: UIAlertAction) {
        //Add code of present
        print("DefaultHandler")
    }

    func alwaysHandler(action: UIAlertAction) {
        //Add code of present
        print("alwaysHandler")

    }

    func neverHandler(action: UIAlertAction) {
        //Add code of present
         print("neverHandler")
}

func cancelHandler(action: UIAlertAction) {
    //Add code of present
     print("cancelHandler")
}

open class func showActionSheet(_ delegate: UIViewController, message: String, strtittle: String, actionTittle: [String], actionStyle: [UIAlertActionStyle], withHandler handler: [((UIAlertAction) -> Void)]?)
    {
        var actionSheetController: UIAlertController = UIAlertController()

        if message != "" || strtittle != ""
        {
            actionSheetController = UIAlertController(title: strtittle, message: message, preferredStyle: UIAlertControllerStyle.actionSheet)
        }

        for i in 0..<actionTittle.count
        {
            actionSheetController.addAction(UIAlertAction(title: actionTittle[i],
                                                          style: actionStyle[i],
                                                          handler: handler?[i]))
        }

        delegate.present(actionSheetController, animated: true, completion: nil)

    }

open-class-func-showActionSheet（u-delegate:UIViewController，message:String，strtitle:String，actionTitle:[String]，actionStyle:[UIAlertActionStyle]，withHandler-handler:[（（UIAlertAction）->Void）]？）
{
var actionSheetController:UIAlertController=UIAlertController（）
如果消息！=“strtittle！”
{
actionSheetController=UIAlertController（标题：strTitle，消息：message，首选样式：UIAlertControllerStyle.actionSheet）
}
对于0..中的i，我已通过使用此函数找到问题的解决方案

以下是我为实现目标所做的修改。以下是代码：

在控制器类中：

 Alert.showActionSheet(self, message: "Save incoming media for this chat",strtittle: "",actionTittle: ["Default(Off)","Always","Never","Cancel"],
                                        actionStyle:  [.default,.default,.default,.cancel] ,
                                        withHandler:  [defaultHandler, alwaysHandler, neverHandler, cancelHandler])

func defaultHandler(action: UIAlertAction) {
        //Add code of present
        print("DefaultHandler")
    }

    func alwaysHandler(action: UIAlertAction) {
        //Add code of present
        print("alwaysHandler")

    }

    func neverHandler(action: UIAlertAction) {
        //Add code of present
         print("neverHandler")
}

func cancelHandler(action: UIAlertAction) {
    //Add code of present
     print("cancelHandler")
}

open class func showActionSheet(_ delegate: UIViewController, message: String, strtittle: String, actionTittle: [String], actionStyle: [UIAlertActionStyle], withHandler handler: [((UIAlertAction) -> Void)]?)
    {
        var actionSheetController: UIAlertController = UIAlertController()

        if message != "" || strtittle != ""
        {
            actionSheetController = UIAlertController(title: strtittle, message: message, preferredStyle: UIAlertControllerStyle.actionSheet)
        }

        for i in 0..<actionTittle.count
        {
            actionSheetController.addAction(UIAlertAction(title: actionTittle[i],
                                                          style: actionStyle[i],
                                                          handler: handler?[i]))
        }

        delegate.present(actionSheetController, animated: true, completion: nil)

    }

在NSObject类中：

 Alert.showActionSheet(self, message: "Save incoming media for this chat",strtittle: "",actionTittle: ["Default(Off)","Always","Never","Cancel"],
                                        actionStyle:  [.default,.default,.default,.cancel] ,
                                        withHandler:  [defaultHandler, alwaysHandler, neverHandler, cancelHandler])

func defaultHandler(action: UIAlertAction) {
        //Add code of present
        print("DefaultHandler")
    }

    func alwaysHandler(action: UIAlertAction) {
        //Add code of present
        print("alwaysHandler")

    }

    func neverHandler(action: UIAlertAction) {
        //Add code of present
         print("neverHandler")
}

func cancelHandler(action: UIAlertAction) {
    //Add code of present
     print("cancelHandler")
}

open class func showActionSheet(_ delegate: UIViewController, message: String, strtittle: String, actionTittle: [String], actionStyle: [UIAlertActionStyle], withHandler handler: [((UIAlertAction) -> Void)]?)
    {
        var actionSheetController: UIAlertController = UIAlertController()

        if message != "" || strtittle != ""
        {
            actionSheetController = UIAlertController(title: strtittle, message: message, preferredStyle: UIAlertControllerStyle.actionSheet)
        }

        for i in 0..<actionTittle.count
        {
            actionSheetController.addAction(UIAlertAction(title: actionTittle[i],
                                                          style: actionStyle[i],
                                                          handler: handler?[i]))
        }

        delegate.present(actionSheetController, animated: true, completion: nil)

    }

open-class-func-showActionSheet（u-delegate:UIViewController，message:String，strtitle:String，actionTitle:[String]，actionStyle:[UIAlertActionStyle]，withHandler-handler:[（（UIAlertAction）->Void）]？）
{
var actionSheetController:UIAlertController=UIAlertController（）
如果消息！=“strtittle！”
{
actionSheetController=UIAlertController（标题：strTitle，消息：message，首选样式：UIAlertControllerStyle.actionSheet）
}
对于0中的i..您可以这样尝试谢谢，我认为这仅适用于AlertController（警报类型）。我正在寻找AlertController（操作表）。您只需要更改它，这就是我写的原因。您可以这样尝试。您还可以为操作标题添加一个字符串数组参数。这是否意味着我必须知道操作的最大数量？类似于以下方式
func buildAlertInfoWithFavButton（带标题：string？，消息消息：string？，带操作标题：[String]，withHandler-handler:[（（UIAlertAction）->Void）]？）->UIAlertController{
还可以传递动作标题数组。您可以这样尝试。谢谢，我想这只是针对AlertController（警报类型）的。我正在寻找AlertController（动作表）。您只需要更改它，这就是我写的原因。您可以这样尝试。您还可以为操作标题添加一个字符串数组参数。这是否意味着我必须知道操作的最大数量？类似于以下方式
func buildAlertInfoWithFavButton（带标题：string？，消息消息：string？，带操作标题：[String]，withHandler处理程序：[（（UIAlertAction）->Void）]？）->UIAlertController{ /COD>动作标题的PASS数组。我正在寻找AcExaltMutuxSimult.ActScEnter。你可以用Accon SeTeCon替换警报吗？我在任何类中调用这个方法。是的，创建新类的基础新文件> SWIFT文件>文件名并粘贴扩展答案。谢谢，还有一个问题：如何给出不同数量的动作，动作？n的标题及其样式？根据要求，我在不同的类中有不同类型的操作表。因此，每个操作表都有操作数、操作标题及其样式。因此，我想为此创建全局函数。我正在寻找UIAlertControllerStyle.actionsheet。您可以用actionsheet替换alert。我可以将此方法称为I吗任何一个类？是的，创建新的基础新文件> SWIFT文件>文件名和扩展的粘贴答案。好的，谢谢。还有一个问题：如何给出不同数量的动作、动作的标记和它们的样式？根据要求，我在不同的类中有不同类型的动作表。因此，每个动作表都有多个动作。，动作的标题和他们的风格。所以，我想做一个全局函数。